Prince William attended the BAFTAs on Sunday and made a royal mistake.

The prince, who is the president of the British Academy of Film and Television Arts, met Rising Star Award nominees Phoebe Dynevor, Ayo Edebiri, Sophie Wilde and Mia McKenna-Bruce backstage, and a photo of the moment went viral for Edebiris shocked expression causing everyone to wonder what was said to prompt it.

Mia, hi, said William in footage obtained by The Daily Mail this week. Very nice to see you guys, honestly. The category was so strong, all of you. Its like, who is gonna pull this off? Its incredible. Its very close between all of you.

William shook each of the actors hands in the meeting at Londons Royal Albert Hall , but then turned his attention to McKenna-Bruce, who had just won the Rising Star Award for her turn as a sexual assault victim in How To Have Sex , to congratulate her.

I havent yet watched your film, he told her. I think it looked like you had a lot of fun.

There are famously certain customs to meeting noblemen like William, which the royal family explains on their website arent obligatory codes. McKenna-Bruce, who had proceeded with a handshake in favor of a curtsy, nonetheless cheekily replied to Williams remark.

I recommend watching it, she told the apparently unknowing prince.